package campus.util;

import java.math.BigDecimal;

/**
  * @name  金额数字转汉字
 * @Author VULCAN
 * @Date 2020/5/10 19:54
 */
public class ConvertNumber {
    /** 定义数组存放数字对应的大写 */
    private final static String[] STR_NUMBER = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };

    /** 定义数组存放位数的大写 */
    private final static String[] STR_MODIFY = { "", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟" };

    /**
     * 转化整数部分
     *
     * @param tempString
     * @return 返回整数部分
     */
    private static String getInteger(String tempString) {
        /** 用来保存整数部分数字串 */
        String strInteger = null;//
        /** 记录"."所在位置 */
        int intDotPos = tempString.indexOf(".");
        int intSignPos = tempString.indexOf("-");
        if (intDotPos == -1)
            intDotPos = tempString.length();
        /** 取出整数部分 */
        strInteger = tempString.substring(intSignPos + 1, intDotPos);
        strInteger = new StringBuffer(strInteger).reverse().toString();
        StringBuffer sbResult = new StringBuffer();
        for (int i = 0; i < strInteger.length(); i++) {
            sbResult.append(STR_MODIFY[i]);
            sbResult.append(STR_NUMBER[strInteger.charAt(i) - 48]);
        }

        sbResult = sbResult.reverse();
        replace(sbResult, "零拾", "零");
        replace(sbResult, "零佰", "零");
        replace(sbResult, "零仟", "零");
        replace(sbResult, "零万", "万");
        replace(sbResult, "零亿", "亿");
        replace(sbResult, "零零", "零");
        replace(sbResult, "零零零", "零");
        /** 这两句不能颠倒顺序 */
        replace(sbResult, "零零零零万", "");
        replace(sbResult, "零零零零", "");
        /** 这样读起来更习惯. */
        replace(sbResult, "壹拾亿", "拾亿");
        replace(sbResult, "壹拾万", "拾万");
        /** 删除个位上的零 */
        if (sbResult.charAt(sbResult.length() - 1) == '零' && sbResult.length() != 1)
            sbResult.deleteCharAt(sbResult.length() - 1);
        if (strInteger.length() == 2) {
            replace(sbResult, "壹拾", "拾");
        }
        /** 将结果反转回来. */
        return sbResult.toString();
    }

    /**
     * 转化小数部分 例：输入22.34返回叁肆
     *
     * @param tempString
     * @return
     */
    private static String getFraction(String tempString) {
        String strFraction = null;
        int intDotPos = tempString.indexOf(".");
        /** 没有点说明没有小数，直接返回 */
        if (intDotPos == -1)
            return "";
        strFraction = tempString.substring(intDotPos + 1);
        StringBuffer sbResult = new StringBuffer(strFraction.length());
        for (int i = 0; i < strFraction.length(); i++) {
            sbResult.append(STR_NUMBER[strFraction.charAt(i) - 48]);
        }
        return sbResult.toString();
    }

    /**
     * 判断传入的字符串中是否有.如果有则返回点
     *
     * @param tempString
     * @return
     */
    private static String getDot(String tempString) {
        return tempString.indexOf(".") != -1 ? "点" : "";
    }

    /**
     * 判断传入的字符串中是否有-如果有则返回负
     *
     * @param tempString
     * @return
     */
    private static String getSign(String tempString) {
        return tempString.indexOf("-") != -1 ? "负" : "";
    }

    /**
     * 将一个数字转化为金额
     *
     * @param tempNumber 传入一个double的变量
     * @return 返一个转换好的字符串
     */
    public static String numberToChinese(double tempNumber) {
        java.text.DecimalFormat df = new java.text.DecimalFormat("#.#########");
        String pTemp = String.valueOf(df.format(tempNumber));
        StringBuffer sbResult = new StringBuffer(getSign(pTemp) + getInteger(pTemp) + getDot(pTemp) + getFraction(pTemp));
        return sbResult.toString();
    }

    public static String numberToChinese(BigDecimal tempNumber) {
        return numberToChinese(tempNumber.doubleValue());
    }

    /**
     * 替代字符
     *
     * @param pValue
     * @param pSource
     * @param pDest
     */
    private static void replace(StringBuffer pValue, String pSource, String pDest) {
        if (pValue == null || pSource == null || pDest == null)
            return;
        /** 记录pSource在pValue中的位置 */
        int intPos = 0;
        do {
            intPos = pValue.toString().indexOf(pSource);
            /** 没有找到pSource */
            if (intPos == -1)
                break;
            pValue.delete(intPos, intPos + pSource.length());
            pValue.insert(intPos, pDest);
        } while (true);
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        System.out.println(numberToChinese(1230400567.8934)+"元");
    }
}
